Directional Limits on Persistent Gravitational Waves from Advanced LIGO's First Observing Run

(LIGO Scientific Collaboration and Virgo Collaboration)

doi:10.1103/PhysRevLett.118.121102

Directional Limits on Persistent Gravitational Waves from Advanced LIGO's First Observing Run

(LIGO Scientific Collaboration and Virgo Collaboration)

California Institute of Technology
Louisiana State University
American University Washington DC
University of Salerno
National Institute for Nuclear Physics
University of Florida
National Science Foundation
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Max Planck Institute for Gravitational Physics (Albert Einstein Institute)
National Institute for Subatomic Physics
Instituto Nacional de Pesquisas Espaciais
Inter-University Centre for Astronomy and Astrophysics India
Tata Institute of Fundamental Research
University of Wisconsin-Milwaukee
Leibniz University Hannover
University of Pisa
Australian National University
California State University Fullerton
Université Paris-Sud
SPIC Science Foundation
University of Rome Tor Vergata
University of Hamburg
APC - AstroParticule et Cosmologie
West Virginia University
University of Perugia
European Gravitational Observatory
Syracuse University
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Wigner Research Centre for Physics
Columbia University
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University of Padua
Polish Academy of Sciences
Georgia Institute of Technology
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Raja Ramanna Centre for Advanced Technology
Lomonosov Moscow State University
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Radboud University Nijmegen
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Institut de Physique de Rennes
Washington State University Pullman
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Bellevue College
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Rochester Institute of Technology
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RAS - Institute of Applied Physics
Seoul National University
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Pusan National University
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Chinese University of Hong Kong
University of Alabama in Huntsville
CNRS
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King's College London
Indian Institute of Science Education and Research, Kolkata
Indian Institute of Technology Gandhinagar
Andrews University
University of Siena
Trinity University
Abilene Christian University

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Abstract

We employ gravitational-wave radiometry to map the stochastic gravitational wave background expected from a variety of contributing mechanisms and test the assumption of isotropy using data from the Advanced Laser Interferometer Gravitational Wave Observatory's (aLIGO) first observing run. We also search for persistent gravitational waves from point sources with only minimal assumptions over the 20-1726 Hz frequency band. Finding no evidence of gravitational waves from either point sources or a stochastic background, we set limits at 90% confidence. For broadband point sources, we report upper limits on the gravitational wave energy flux per unit frequency in the range Fα,Θ(f)<(0.1-56)×10-8 erg cm-2 s-1 Hz-1(f/25 Hz)α-1 depending on the sky location Θ and the spectral power index α. For extended sources, we report upper limits on the fractional gravitational wave energy density required to close the Universe of Ω(f,Θ)<(0.39-7.6)×10-8 sr-1(f/25 Hz)α depending on Θ and α. Directed searches for narrowband gravitational waves from astrophysically interesting objects (Scorpius X-1, Supernova 1987 A, and the Galactic Center) yield median frequency-dependent limits on strain amplitude of h0<(6.7,5.5, and 7.0)×10-25, respectively, at the most sensitive detector frequencies between 130-175 Hz. This represents a mean improvement of a factor of 2 across the band compared to previous searches of this kind for these sky locations, considering the different quantities of strain constrained in each case.

Original language	English
Article number	121102
Journal	Physical Review Letters
Volume	118
Issue number	12
DOIs	https://doi.org/10.1103/PhysRevLett.118.121102
State	Published - 24 Mar 2017
Externally published	Yes

Bibliographical note

Publisher Copyright:
© 2017 us. Published by the American Physical Society.

Funding

Funders	Funder number
???publication-publication-funding-organisation-not-added???	ST/I006285/1, ST/N000064/1
National Science Foundation	1607709, 1104371, 1308527, 1505629, 1505308, 1505779, 1607520, 1607585, 1607673, 1608922, 1404139, 1506360, 1806461, 1608423
Science and Technology Facilities Council	ST/N00003X/1, ST/J000019/1, ST/P000258/1, ST/H002006/1, ST/L000954/1, ST/M005844/1, PP/F001118/1, ST/J000345/1, PP/F00110X/1, ST/I000887/1, ST/J000302/1, 1653071, ST/N000072/1, ST/N005481/1, ST/I006277/1, ST/L000911/1, ST/N005422/1, ST/N005716/1, PPA/G/S/2002/00652, ST/J000361/1, ST/N005406/1, Gravitational Waves, ST/G504284/1, ST/K000845/1, ST/L003465/1, ST/I006242/1, 1654298, PP/F001096/1, ST/M006735/1, ST/I006269/1, ST/N000080/1, ST/I001085/1, ST/L000946/1, ST/N000633/1, ST/I001026/1, ST/J00166X/1, ST/N005430/1

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10.1103/PhysRevLett.118.121102

Cite this

@article{614076f0e47a4f359063dc9654216386,

title = "Directional Limits on Persistent Gravitational Waves from Advanced LIGO's First Observing Run",

abstract = "We employ gravitational-wave radiometry to map the stochastic gravitational wave background expected from a variety of contributing mechanisms and test the assumption of isotropy using data from the Advanced Laser Interferometer Gravitational Wave Observatory's (aLIGO) first observing run. We also search for persistent gravitational waves from point sources with only minimal assumptions over the 20-1726 Hz frequency band. Finding no evidence of gravitational waves from either point sources or a stochastic background, we set limits at 90\% confidence. For broadband point sources, we report upper limits on the gravitational wave energy flux per unit frequency in the range Fα,Θ(f)<(0.1-56){\texttimes}10-8 erg cm-2 s-1 Hz-1(f/25 Hz)α-1 depending on the sky location Θ and the spectral power index α. For extended sources, we report upper limits on the fractional gravitational wave energy density required to close the Universe of Ω(f,Θ)<(0.39-7.6){\texttimes}10-8 sr-1(f/25 Hz)α depending on Θ and α. Directed searches for narrowband gravitational waves from astrophysically interesting objects (Scorpius X-1, Supernova 1987 A, and the Galactic Center) yield median frequency-dependent limits on strain amplitude of h0<(6.7,5.5, and 7.0){\texttimes}10-25, respectively, at the most sensitive detector frequencies between 130-175 Hz. This represents a mean improvement of a factor of 2 across the band compared to previous searches of this kind for these sky locations, considering the different quantities of strain constrained in each case.",

author = "\{(LIGO Scientific Collaboration and Virgo Collaboration)\} and Abbott, \{B. P.\} and R. Abbott and Abbott, \{T. D.\} and Abernathy, \{M. R.\} and F. Acernese and K. Ackley and C. Adams and T. Adams and P. Addesso and Adhikari, \{R. X.\} and Adya, \{V. B.\} and C. Affeldt and M. Agathos and K. Agatsuma and N. Aggarwal and Aguiar, \{O. D.\} and L. Aiello and A. Ain and P. Ajith and B. Allen and A. Allocca and Altin, \{P. A.\} and A. Ananyeva and Anderson, \{S. B.\} and Anderson, \{W. G.\} and S. Appert and K. Arai and Araya, \{M. C.\} and Areeda, \{J. S.\} and N. Arnaud and Arun, \{K. G.\} and S. Ascenzi and G. Ashton and M. Ast and Aston, \{S. M.\} and P. Astone and P. Aufmuth and C. Aulbert and A. Avila-Alvarez and S. Babak and P. Bacon and Bader, \{M. K.M.\} and Baker, \{P. T.\} and F. Baldaccini and G. Ballardin and Ballmer, \{S. W.\} and Barayoga, \{J. C.\} and Barclay, \{S. E.\} and Barish, \{B. C.\} and O. Birnholtz",

note = "Publisher Copyright: {\textcopyright} 2017 us. Published by the American Physical Society.",

year = "2017",

month = mar,

day = "24",

doi = "10.1103/PhysRevLett.118.121102",

language = "אנגלית",

volume = "118",

journal = "Physical Review Letters",

issn = "0031-9007",

publisher = "American Physical Society",

number = "12",

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TY - JOUR

T1 - Directional Limits on Persistent Gravitational Waves from Advanced LIGO's First Observing Run

AU - (LIGO Scientific Collaboration and Virgo Collaboration)

AU - Abbott, B. P.

AU - Abbott, R.

AU - Abbott, T. D.

AU - Abernathy, M. R.

AU - Acernese, F.

AU - Ackley, K.

AU - Adams, C.

AU - Adams, T.

AU - Addesso, P.

AU - Adhikari, R. X.

AU - Adya, V. B.

AU - Affeldt, C.

AU - Agathos, M.

AU - Agatsuma, K.

AU - Aggarwal, N.

AU - Aguiar, O. D.

AU - Aiello, L.

AU - Ain, A.

AU - Ajith, P.

AU - Allen, B.

AU - Allocca, A.

AU - Altin, P. A.

AU - Ananyeva, A.

AU - Anderson, S. B.

AU - Anderson, W. G.

AU - Appert, S.

AU - Arai, K.

AU - Araya, M. C.

AU - Areeda, J. S.

AU - Arnaud, N.

AU - Arun, K. G.

AU - Ascenzi, S.

AU - Ashton, G.

AU - Ast, M.

AU - Aston, S. M.

AU - Astone, P.

AU - Aufmuth, P.

AU - Aulbert, C.

AU - Avila-Alvarez, A.

AU - Babak, S.

AU - Bacon, P.

AU - Bader, M. K.M.

AU - Baker, P. T.

AU - Baldaccini, F.

AU - Ballardin, G.

AU - Ballmer, S. W.

AU - Barayoga, J. C.

AU - Barclay, S. E.

AU - Barish, B. C.

AU - Birnholtz, O.

PY - 2017/3/24

Y1 - 2017/3/24

N2 - We employ gravitational-wave radiometry to map the stochastic gravitational wave background expected from a variety of contributing mechanisms and test the assumption of isotropy using data from the Advanced Laser Interferometer Gravitational Wave Observatory's (aLIGO) first observing run. We also search for persistent gravitational waves from point sources with only minimal assumptions over the 20-1726 Hz frequency band. Finding no evidence of gravitational waves from either point sources or a stochastic background, we set limits at 90% confidence. For broadband point sources, we report upper limits on the gravitational wave energy flux per unit frequency in the range Fα,Θ(f)<(0.1-56)×10-8 erg cm-2 s-1 Hz-1(f/25 Hz)α-1 depending on the sky location Θ and the spectral power index α. For extended sources, we report upper limits on the fractional gravitational wave energy density required to close the Universe of Ω(f,Θ)<(0.39-7.6)×10-8 sr-1(f/25 Hz)α depending on Θ and α. Directed searches for narrowband gravitational waves from astrophysically interesting objects (Scorpius X-1, Supernova 1987 A, and the Galactic Center) yield median frequency-dependent limits on strain amplitude of h0<(6.7,5.5, and 7.0)×10-25, respectively, at the most sensitive detector frequencies between 130-175 Hz. This represents a mean improvement of a factor of 2 across the band compared to previous searches of this kind for these sky locations, considering the different quantities of strain constrained in each case.

AB - We employ gravitational-wave radiometry to map the stochastic gravitational wave background expected from a variety of contributing mechanisms and test the assumption of isotropy using data from the Advanced Laser Interferometer Gravitational Wave Observatory's (aLIGO) first observing run. We also search for persistent gravitational waves from point sources with only minimal assumptions over the 20-1726 Hz frequency band. Finding no evidence of gravitational waves from either point sources or a stochastic background, we set limits at 90% confidence. For broadband point sources, we report upper limits on the gravitational wave energy flux per unit frequency in the range Fα,Θ(f)<(0.1-56)×10-8 erg cm-2 s-1 Hz-1(f/25 Hz)α-1 depending on the sky location Θ and the spectral power index α. For extended sources, we report upper limits on the fractional gravitational wave energy density required to close the Universe of Ω(f,Θ)<(0.39-7.6)×10-8 sr-1(f/25 Hz)α depending on Θ and α. Directed searches for narrowband gravitational waves from astrophysically interesting objects (Scorpius X-1, Supernova 1987 A, and the Galactic Center) yield median frequency-dependent limits on strain amplitude of h0<(6.7,5.5, and 7.0)×10-25, respectively, at the most sensitive detector frequencies between 130-175 Hz. This represents a mean improvement of a factor of 2 across the band compared to previous searches of this kind for these sky locations, considering the different quantities of strain constrained in each case.

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U2 - 10.1103/PhysRevLett.118.121102

DO - 10.1103/PhysRevLett.118.121102

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AN - SCOPUS:85016152867

SN - 0031-9007

VL - 118

JO - Physical Review Letters

JF - Physical Review Letters

IS - 12

M1 - 121102

ER -

Directional Limits on Persistent Gravitational Waves from Advanced LIGO's First Observing Run

Abstract

Bibliographical note

Funding

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